Answer:
B
Step-by-step explanation:
Given
- 3x + 12 ≤ 15 ( subtract 12 from both sides )
- 3x ≤ 3
Divide both sides by - 3, reversing the symbol as a result of dividing by a negative quantity.
x ≥ - 1
Since x can equal - 1, we are looking for a solid circle at x = - 1 on the number line.
Since x greater than - 1 we require the shaded arrow to be pointing right.
Graph B represents this
Find the unit rate:
-1.2 tons
------------- = -0.15 ton/day, or -3/20 ton/day
8 days
Try using either the app the calculater not like those other ones this calculator can solve fractions and almost any other thing
Answers: Using the process of completing the square:
1. Isolate the constant by <u>adding 7 to</u> both sides of the equation:
x^2-6x-7+7=0+7
x^2-6x=7
2. Add <u>9</u> to both sides of x2 – 6x = 7 to form a perfect square trinomial while keeping the equation balanced:
x^2-6x+9=7+9
x^2-6x+9=16
3. Write the trinomial x2 – 6x + 9 as squared:
<u>(x-3)^2</u> = 16
4. Use the square root property of equality to get x – 3 = ±<u>4</u> .
sqrt[ (x-3)^2 ] = ± sqrt(16)
x-3 = ±4
5. Isolate the variable to get solutions of –1 and 7.
x-3 = ±4
x-3+3 = ±4+3
x = ±4+3
x1=-4+3→x1=-1
x2=+4+3→x2=7
Answer:14.518
Step-by-step explanation:
